import { Observable } from 'rxjs';
import { CacheService } from './cache.service';
import { Connection, ConnectionsService } from "./connections.service";
import { Waypoint } from "./trip";
import * as i0 from "@angular/core";
export declare class CachedConnectionsService {
    private cache;
    private connectionService;
    constructor(cache: CacheService, connectionService: ConnectionsService);
    getConnections(from: Waypoint, to: Waypoint, currency?: string): Observable<Connection[]>;
    static ɵfac: i0.ɵɵFactoryDeclaration<CachedConnectionsService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<CachedConnectionsService>;
}